Neutrinoless double-beta decay (0 ν 2 β ) is a hypothetical rare nuclear transition. Its observation would provide an important insight about the nature of neutrinos (Dirac or Majorana particle) demonstrating that the lepton number is not conserved. BINGO (Bi-Isotope 0 ν 2 β Next Generation Observatory) aims to set the technological grounds for future bolometric 0 ν 2 β experiments. It is based on a dual heat-light readout, i.e. a main scintillating absorber embedding the double-beta decay isotope accompanied by a cryogenic light detector. BINGO will study two of the most promising isotopes: 100 Mo embedded in Li 2 MoO 4 (LMO) crystals and 130 Te embedded in TeO 2 . BINGO technology will reduce dramatically the background in the region of interest, thus boosting the discovery sensitivity of 0 ν 2 β . The proposed solutions will have a high impact on next-generation bolometric tonne-scale experiments, like CUPID. In this contribution, we present the results obtained during the first tests performed in the framework of BINGO R&D.